9月18日英语日期怎么写

9月18日用英语写作September 18th。在英语中，日期通常按照月份和日期的顺序书写，月份用英文单词表示，日期用数字表示，后面加上序数词后缀。对于9月18日，月份是September，日期是18，因此写作September 18th。

When writing the date September 18th in English, it is expressed as "September eighteenth." In English date notation, the day precedes the month. The month "September" is written as "September," and the date is written in ordinal form. For instance, September 1st is written as "September first."

Ordinal numbers in English have specific abbreviation patterns. Generally, if the last digit of the number is 1, 2, or 3, the abbreviations are 'st' for 1st, 'nd' for 2nd, and 'rd' for 3rd. Here are some examples: first (1st), second (2nd), third (3rd). For numbers ending with 1, 2, or 3, the pattern is straightforward. However, for other numbers, the abbreviation is the number followed by 'th'. Here are some examples: fourth (4th), sixth (6th), eleventh (11th), twelfth (12th), thirteenth (13th), fourteenth (14th), fifteenth (15th), and twentieth (20th).